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Ozone Generation by Ultraviolet Lamps†.
Claus, Holger.
  • Claus H; Ushio America, Inc., Cypress, CA.
Photochem Photobiol ; 97(3): 471-476, 2021 05.
Article in English | MEDLINE | ID: covidwho-1096925
ABSTRACT
The COVID-19 pandemic has generated a great deal of interest in ultraviolet germicidal irradiation (UVGI) as an important means to disinfect air and surfaces. The traditional lamp employed for UVGI has been the low-pressure mercury-discharge lamp that emits primarily at 254 nm in the ultraviolet photobiological band UV-C (100-280 nm). The recent development of even shorter-wavelength UV-C lamps, such as the Krypton-Chloride, 222-nm lamp, has led to greater concerns about the UV-C generation of ozone. It is well known that wavelengths below 240 nm more readily generate ozone. However, there is a great misunderstanding with regard to the actual generation and dissipation of ozone molecules by UV-C lamps. A review of this subject is much warranted. An overview of the ozone generation of various UV-C light sources is presented to give users a better understanding of risk and how to assure control of ozone when employing UV-C lamps.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Ozone / Ultraviolet Rays / Lighting / Disinfection / SARS-CoV-2 / COVID-19 Type of study: Prognostic study Language: English Journal: Photochem Photobiol Year: 2021 Document Type: Article Affiliation country: Php.13391

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Ozone / Ultraviolet Rays / Lighting / Disinfection / SARS-CoV-2 / COVID-19 Type of study: Prognostic study Language: English Journal: Photochem Photobiol Year: 2021 Document Type: Article Affiliation country: Php.13391